Junseongย Kim
Co-Founder, CEO at BitterSweet
Seoul, South Korea
Summary
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Top SchoolJunseong Kim is a founder and machine learning leader with 11 years of hands-on experience building and scaling AI products since age 18. As Co-Founder and CEO of BitterSweet, he focuses on helping creators 10x their global scale, drawing on deep technical roots from leading LLM pretraining, quantization, and inference optimization projects at ScatterLab. He has repeatedly driven cost and latency improvements (e.g., 3x faster GPT inference, 5x cost reduction on RoBERTa inference) and led end-to-end ML efforts from data collection to deployment on TPU/GPUs and cloud spot instances. Equally comfortable in strategy roles, he served as solo CEO staff driving growth, BD, IR, and hiring through hundreds of candidate coffeeshops. Based in Seoul, he blends startup grit with research rigor and a knack for turning large-scale conversational datasets into production-ready systems.
11 years of coding experience
6 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Kookmin UniversityGraduated, Hacking & Defence, Graduated, Hacking & Defence at Korea Digital Media High School
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (94)
transformers10
language-model10
python10
flax10
deep-learning10
gpu10
compression10
cpp10
optimization10
distributed-training10
transformer10
nlp10
jax10
seq2seq10
nvidia10
Programming languages (6)
Github contributions (5)
codertimo/codertimo
Aug 2020 - May 2021
Contributions:5 commits, 4 pushes, 1 branch in 9 months
kookmin-learn/kookmin-learn.github.io
Mar 2017 - Mar 2017
Contributions:44 commits, 21 PRs, 40 pushes in 17 days
react
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